CN112248781A - Integrated electric driving system and integrated cooling device thereof - Google Patents
Integrated electric driving system and integrated cooling device thereof Download PDFInfo
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- CN112248781A CN112248781A CN202011162720.XA CN202011162720A CN112248781A CN 112248781 A CN112248781 A CN 112248781A CN 202011162720 A CN202011162720 A CN 202011162720A CN 112248781 A CN112248781 A CN 112248781A
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- Prior art keywords
- integrated
- cooling
- electric drive
- drive system
- driving motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The present invention provides an integrated cooling device for an integrated electric drive system, comprising: a drive motor; integrated devices disposed at opposite sides of the driving motor; a heat sink provided on a side of the integrated device facing the driving motor; wherein the integrated cooling apparatus is configured such that the driving motor, the integrated device, and the heat sink are simultaneously cooled. The cooling fan is driven by utilizing the power of the driving motor to serve as a cooling air source of the driving device, and the cooling scheme of integrated equipment such as a controller/inverter is reasonably designed to realize the integral cooling of the integrated device. The invention can efficiently realize the cooling of the integrated electric drive device, does not need to additionally increase a cooling part, has compact mechanism and is beneficial to further improving the integration degree and the power density of the electric drive device.
Description
Technical Field
The invention relates to the technical field of power electronic heat dissipation, in particular to an integrated electric driving system and an integrated cooling device thereof.
Background
Lightweight, intensification, intellectuality are electric drive system's development direction, and present integral type actuating system is in electric automobile field, track traffic progress rapidly. The integrated design of the driving system can improve the system integration level and save the cost.
Taking an electric automobile as an example, before being integrally designed, as shown in fig. 1A, an electric driver 1A, a motor 2a and a gear box 3a of the electric automobile are all arranged on a frame 10a, and the frame 10a is connected with wheels 20a through springs; after the integrated design, as shown in fig. 1B, the electric drive, the electric motor and the gear box are integrated into an integrated drive system 100a, which is disposed inside the frame 10a, so as to realize the integrated design.
Further taking a train traction system as an example, before the integrated design, as shown in fig. 2A, in the train traction system, a traction inverter 4a is provided in a vehicle body 40a, a motor 2A is provided in a bogie 30a, and a gear box 3a is provided in a wheel 20 a; after the integrated design, as shown in fig. 2B, the traction inverter, motor and gearbox are integrated into an integrated drive system 200a, all disposed in a drive train of the truck 30 a.
From the above two examples, it can be seen that the volume and weight of the electric drive system can be significantly reduced by adopting an integrated design. However, the heat dissipation power density is increased, and the volume and weight advantages are maintained, but the volume and weight indexes provided for the cooling system are very strict, and the heat dissipation of the integrated electric drive system becomes difficult.
With the increasing demand of the market for power density, efficiency and cost of the electric drive system, the integration of the electric drive system becomes one of the hot development directions, but the negative effects of the integration degree and the power density improvement are that the heat flow density to be radiated of the device is increased, and the size and weight indexes for radiating are very strict. Therefore, based on the problem, the present invention provides a new integrated electric drive system and an integrated cooling device thereof to solve the technical problem.
Disclosure of Invention
The invention aims to provide an integrated electric drive system and an integrated cooling device thereof, which can ensure the cooling performance of the electric drive system on the premise of not influencing the integration level and the power density.
To achieve the above object, the present invention provides an integrated cooling device of an integrated electric drive system, comprising:
a drive motor;
integrated devices disposed at opposite sides of the driving motor; and
a heat sink provided on a side of the integrated device facing the driving motor;
wherein the integrated cooling apparatus is configured such that the driving motor, the integrated device, and the heat sink are simultaneously cooled.
The integrated cooling device of the integrated electric drive system is characterized in that a heat insulation layer is arranged between the drive motor and the integrated equipment.
The integrated cooling device of the integrated electric drive system further comprises a cooling fan which is arranged on the non-transmission end shaft of the drive motor.
The integrated cooling device of the integrated electric drive system is characterized in that the cooling fan is directly connected with the drive motor or indirectly connected with the drive motor through a speed change mechanism.
The integrated cooling device of the integrated electric drive system is characterized in that the radiator is a pure metal section bar or a cast fin radiator.
The present invention also provides an integrated cooling device for an integrated electric drive system, comprising:
a drive motor;
integrated devices disposed at opposite sides of the driving motor; and
the radiator is arranged on one side of the driving motor and is respectively communicated with the integrated equipment on the two sides of the driving motor through a heat transfer structure;
wherein the integrated cooling device is configured such that the heat sink and the integrated apparatus are first cooled and then the driving motor is cooled.
The integrated cooling device of the integrated electric drive system is characterized in that a heat insulation layer is arranged between the drive motor and the integrated equipment.
The integrated cooling device of the integrated electric drive system further comprises a cooling fan which is arranged on the non-transmission end shaft of the drive motor.
The integrated cooling device of the integrated electric drive system is characterized in that the cooling fan is directly connected with the drive motor or indirectly connected with the drive motor through a speed change mechanism.
The integrated cooling device of the integrated electric drive system, wherein the radiator adopts a heat pipe, a liquid cooling heat exchanger or a phase change cooling condenser, and the heat transfer structure adopts a water pipe, a heat pipe, a single-phase cooling medium pipeline or a phase change working medium pipeline.
The invention also provides an integrated electric drive system which comprises the integrated cooling device of the integrated electric drive system.
The invention has the beneficial effects that: the cooling fan is driven by utilizing the power of the driving motor to serve as a cooling air source of the driving device, and the integral cooling of the integrated device is realized by reasonably designing a cooling scheme of integrated equipment such as a controller/an inverter and the like; the cooling topology of the integrated equipment in the invention can be realized in series connection and parallel connection; the invention is suitable for integrated electric driving devices with various cooling forms such as air cooling, liquid cooling, phase change cooling and the like and combination forms thereof. Therefore, the integrated electric drive device can be efficiently cooled, additional cooling parts are not required, the mechanism is compact, and the integration degree and the power density of the electric drive device are further improved.
Drawings
FIG. 1A is a schematic structural diagram of a conventional electric vehicle before integrated design;
FIG. 1B is a schematic structural diagram of a conventional electric vehicle after the electric vehicle is integrally designed;
FIG. 2A is a schematic diagram of a conventional train traction system prior to its integrated design;
FIG. 2B is a schematic diagram of a prior art train traction system after being integrally designed;
FIG. 3 is a schematic structural diagram according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram according to a second embodiment of the present invention.
Detailed Description
In order to clearly illustrate the inventive content of the present invention, the present invention will be described below with reference to examples.
In the description of the present invention, it should be noted that the terms "upper", "lower", "horizontal", "vertical", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
First embodiment
As shown in fig. 3, it is a schematic structural diagram according to the first embodiment of the present invention. The present invention provides an integrated cooling device for an integrated electric drive system, comprising: a cooling fan 1, a drive motor 2, a heat insulating layer 3, an integrated device 4 including a controller/inverter and other devices, and a heat sink 5.
The driving motor 2 is provided with a non-transmission end shaft 2a and a transmission end shaft 2b which are oppositely arranged, wherein the cooling fan 1 is arranged on the non-transmission end shaft 2a of the driving motor 2 and drives the cooling fan 1 to rotate along with the operation of the driving motor 2 so as to provide cooling air required by the cooling of the driving device. The cooling fan 1 may be directly connected to a rotor of the driving motor, or may be indirectly connected to the driving motor via a speed change mechanism (e.g., a speed reducer). Preferably, the cooling fan 1 may be an axial fan, or may be a mixed flow or centrifugal fan.
The integrated equipment 4 is arranged on two opposite sides of the driving motor 2, and the integrated equipment 4 faces to one side of the driving motor 2 and is provided with a radiator 5. Preferably, the heat sink 5 is a pure metal profile or a cast fin heat sink, but not limited thereto.
Still preferably, in consideration of the temperature difference endured by the driving motor 2 and the integrated device 4, a heat insulating layer 3 is further provided between the driving motor 2 and the integrated device 4 to prevent the heat diffusion influence. The heat insulation layer 3 may be disposed on a side of the driving motor 2 facing the integrated device 4, and may be selected from, but not limited to, glass fiber, asbestos, rock wool, silicate, aerogel blanket, vacuum plate, and the like.
The working principle of the first embodiment of the invention is as follows: the cooling wind flow topology connects the drive motor 2 cooling in parallel with the radiator 5 cooling of the integrated device 4 such as a controller/inverter. Specifically, after entering the driving system from the external environment under the driving of the cooling fan 1, the cooling air a is divided into two paths of cooling air B and cooling air C which are connected in parallel, the cooling air B is responsible for cooling the driving motor 2, and the cooling air C is responsible for cooling the integrated device 4. By controlling the rotating speed of the cooling fan 1, the air flow of the two paths of cooling air B and cooling air C can be designed and matched according to requirements.
Second embodiment
As shown in fig. 4, it is a schematic structural diagram according to a second embodiment of the present invention. The present invention provides an integrated cooling device for an integrated electric drive system, comprising: a cooling fan 1, a drive motor 2, a heat insulating layer 3, an integrated device 4 including a controller/inverter and other devices, a radiator 5, and heat transfer structures 6a, 6 b.
The driving motor 2 is provided with a non-transmission end shaft 2a and a transmission end shaft 2b which are oppositely arranged, wherein the cooling fan 1 is arranged on the non-transmission end shaft 2a of the driving motor 2 and drives the cooling fan 1 to rotate along with the operation of the driving motor 2 so as to provide cooling air required by the cooling of the driving device. The cooling fan 1 may be directly connected to a rotor of the driving motor, or may be indirectly connected to the driving motor via a speed change mechanism (e.g., a speed reducer). Preferably, the cooling fan 1 may be an axial fan, or may be a mixed flow or centrifugal fan.
The integrated equipment 4 is arranged on two opposite sides of the driving motor 2, and a heat insulation layer 3 is arranged between the driving motor 2 and the integrated equipment 4 to prevent heat diffusion influence in consideration of temperature difference endured by the driving motor 2 and the integrated equipment 4. The heat insulation layer 3 may be made of glass fiber, asbestos, rock wool, silicate, aerogel felt, vacuum plate, etc., but not limited thereto.
The radiator 5 is arranged on one side of the non-transmission end shaft 2a of the driving motor 2, and is respectively communicated with the integrated equipment 4 on two sides of the driving motor 2 through heat transfer structures 6a and 6b, so as to radiate the integrated equipment 4. Preferably, the heat sink 5 may be a heat pipe, a liquid-cooled heat exchanger, or a phase-change cooled condenser. Preferably, the heat transferring structures 6a and 6b may be water pipes, heat pipes, single-phase cooling medium pipes or phase-change medium pipes.
The working principle of the second embodiment of the invention is as follows: the cooling wind flow topology connects the cooling of the drive motor 2 in series with the cooling of the heat sink 5. Specifically, after the cooling air a enters the driving device 2 from the external environment under the driving of the cooling fan 1, the heat sink 5 is cooled, and the integrated device 4 is cooled by the heat transfer structures 6a and 6b, and then the driving motor 2 is cooled.
In the present embodiment, the cooling form of the driving motor 2 is not limited to air cooling, and is also applicable to liquid cooling and phase change cooling motors, wherein the cooling working medium is transferred through the heat transfer structures 6a and 6 b.
Third embodiment
The third embodiment differs from the first embodiment in that a cooling fan is omitted and cooling is performed by using wind entering the vehicle during operation of the vehicle, i.e., traveling wind cooling, and a similar effect can be achieved.
Fourth embodiment
The fourth embodiment differs from the second embodiment in that a cooling fan is omitted and cooling is performed by using wind entering the vehicle during operation of the vehicle, i.e., traveling wind cooling, and a similar effect can be achieved.
Fifth embodiment
The invention also provides an integrated electric drive system which comprises the integrated cooling device of the integrated electric drive system.
In conclusion, the beneficial effects of the invention are as follows: the cooling fan is driven by utilizing the power of the driving motor to serve as a cooling air source of the driving device, and the integral cooling of the integrated device is realized by reasonably designing a cooling scheme of integrated equipment such as a controller/an inverter and the like; the cooling topology of the integrated equipment in the invention can be realized in series connection and parallel connection; the invention is suitable for integrated electric driving devices with various cooling forms such as air cooling, liquid cooling, phase change cooling and the like and combination forms thereof. Therefore, the integrated electric drive device can be efficiently cooled, additional cooling parts are not required, the mechanism is compact, and the integration degree and the power density of the electric drive device are further improved.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (11)
1. An integrated cooling apparatus for an integrated electric drive system, comprising:
a drive motor;
integrated devices disposed at opposite sides of the driving motor; and
a heat sink provided on a side of the integrated device facing the driving motor;
wherein the integrated cooling apparatus is configured such that the driving motor, the integrated device, and the heat sink are simultaneously cooled.
2. The integrated cooling apparatus of the integrated electric drive system of claim 1, wherein a thermal barrier is disposed between the drive motor and the integrated device.
3. The integrated cooling apparatus of the integrated electric drive system of claim 1 or 2, further comprising a cooling fan disposed on the non-drive end shaft of the drive motor.
4. The integrated cooling apparatus of the integrated electric drive system of claim 3, wherein the cooling fan is coupled directly to the drive motor or indirectly to the drive motor via a speed change mechanism.
5. Integrated cooling device of an integrated electric drive system according to claim 1 or 2, characterized in that the heat sink is a pure metal profile or a cast fin heat sink.
6. An integrated cooling apparatus for an integrated electric drive system, comprising:
a drive motor;
integrated devices disposed at opposite sides of the driving motor; and
the radiator is arranged on one side of the driving motor and is respectively communicated with the integrated equipment on the two sides of the driving motor through a heat transfer structure;
wherein the integrated cooling device is configured such that the heat sink and the integrated apparatus are first cooled and then the driving motor is cooled.
7. The integrated cooling apparatus of the integrated electric drive system of claim 6, wherein a thermal barrier is disposed between the drive motor and the integrated device.
8. The integrated cooling apparatus of the integrated electric drive system of claim 6 or 7, further comprising a cooling fan disposed on the non-drive end shaft of the drive motor.
9. The integrated cooling apparatus of the integrated electric drive system of claim 8, wherein the cooling fan is coupled directly to the drive motor or indirectly to the drive motor via a speed change mechanism.
10. The integrated cooling device of the integrated electric drive system according to claim 6 or 7, wherein the heat sink is a heat pipe, a liquid-cooled heat exchanger or a phase-change cooled condenser, and the heat transfer structure is a water pipe, a heat pipe, a single-phase cooling medium pipeline or a phase-change medium pipeline.
11. An integrated electric drive system comprising an integrated cooling device of the integrated electric drive system according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162720.XA CN112248781A (en) | 2020-10-27 | 2020-10-27 | Integrated electric driving system and integrated cooling device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162720.XA CN112248781A (en) | 2020-10-27 | 2020-10-27 | Integrated electric driving system and integrated cooling device thereof |
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| Publication Number | Publication Date |
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| CN112248781A true CN112248781A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011162720.XA Pending CN112248781A (en) | 2020-10-27 | 2020-10-27 | Integrated electric driving system and integrated cooling device thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1615569A (en) * | 2002-09-13 | 2005-05-11 | 爱信艾达株式会社 | Drive device |
| JP2010172179A (en) * | 2008-12-24 | 2010-08-05 | Toshiba Corp | Vehicle-driving unit |
| KR20130068857A (en) * | 2011-12-16 | 2013-06-26 | 엘에스엠트론 주식회사 | Cooling system for vehicle and control method thereof |
| CN205647182U (en) * | 2016-04-19 | 2016-10-12 | 绍兴文理学院 | Good motor dispels heat |
| CN107054032A (en) * | 2017-04-19 | 2017-08-18 | 武汉理工大学 | A kind of integrated electric automobile cooling system and control method |
| JP2017147919A (en) * | 2015-05-15 | 2017-08-24 | 株式会社豊田自動織機 | Inverter body type rotary electric machine and manufacturing method for inverter body type rotary electric machine |
| CN108880104A (en) * | 2018-07-20 | 2018-11-23 | 中车唐山机车车辆有限公司 | Magneto cooling system used for rail vehicle |
| CN109050237A (en) * | 2018-09-25 | 2018-12-21 | 奇瑞汽车股份有限公司 | Electric automobile cooling system and electric car |
| CN110635607A (en) * | 2018-06-22 | 2019-12-31 | 群光电能科技股份有限公司 | Integrated motor and integrated heat dissipation system |
-
2020
- 2020-10-27 CN CN202011162720.XA patent/CN112248781A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1615569A (en) * | 2002-09-13 | 2005-05-11 | 爱信艾达株式会社 | Drive device |
| JP2010172179A (en) * | 2008-12-24 | 2010-08-05 | Toshiba Corp | Vehicle-driving unit |
| KR20130068857A (en) * | 2011-12-16 | 2013-06-26 | 엘에스엠트론 주식회사 | Cooling system for vehicle and control method thereof |
| JP2017147919A (en) * | 2015-05-15 | 2017-08-24 | 株式会社豊田自動織機 | Inverter body type rotary electric machine and manufacturing method for inverter body type rotary electric machine |
| CN205647182U (en) * | 2016-04-19 | 2016-10-12 | 绍兴文理学院 | Good motor dispels heat |
| CN107054032A (en) * | 2017-04-19 | 2017-08-18 | 武汉理工大学 | A kind of integrated electric automobile cooling system and control method |
| CN110635607A (en) * | 2018-06-22 | 2019-12-31 | 群光电能科技股份有限公司 | Integrated motor and integrated heat dissipation system |
| CN108880104A (en) * | 2018-07-20 | 2018-11-23 | 中车唐山机车车辆有限公司 | Magneto cooling system used for rail vehicle |
| CN109050237A (en) * | 2018-09-25 | 2018-12-21 | 奇瑞汽车股份有限公司 | Electric automobile cooling system and electric car |
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Application publication date: 20210122 |
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